Combination-lock.



H. 0. STEVENS. COMBINATION LOOK.

APPLICATION FILED MAY 14, 1912.

1,083,226. Patented Dec.30,1913.

ATTORNEYS- COLUMBIA PLANOGRAFH CO. WASHINGTON. D. C.

HANSIEORD C. STEVENS, OF JENKINS, KENTUCKY.

COMBINATION-LOCK.

Specification of Letters Patent.

Patented Dec. 36, 1913.

Application filed May 14, 1912. Serial No. 697,208.

To all whom it may concern Be it known that I, HANSFORD C. S'rnvnNs, acitizen of the United States, and a resident of Jenkins, in the countyof Letcher and State of Kentucky, have invented certain new and usefulImprovements in Combination-Locks, of which the following is aspecification.

My invention is an improvement in combination locks, and has for itsobject, the provision of a simple inexpensive lock of the characterspecified, wherein a plurality of tumblers is arranged between the boltand the rotating operating knob having means for engaging. and movingthe bolt when moved toward the bolt, the knob also having means forengaging and turning the tumblers, to bring them into position to permitthe passage of the engaging means of the knob.

In the drawings: Figure 1 is a front view of the lock showing the dial;Figs. 2 and 3 are sections on the lines 2-2 and 3-3 of Fig. 1; Figs. 4and 5 are sections on the lines l-1 and 5-5 of Fig. 2; Figs. 6 and 7 aresections on the lines 6-6 and 7-7 of Fig. 3. Fig. 8 is a section on thelines 8-8 of Fig. 5; Fig. 9 is a section on the line 9-9 of Fig. 4; and,Fig. 10 is a sectional view, showing a modified form of bolt.

In the present embodiment of the invention, an escutcheon 1 is provided,having a central opening 2, and a cup-shaped casing 3 is arranged overthe opening, the casing having a flange 4 lapping on the edge of theopening and secured thereto by rivets 5. The casing has a centralinwardly extending hub or boss 6, and a disk 11 having a knob 7 providedwith a central stem 8, which extends into the hub, and is held in placeby a radial pin 9 in the hub, which engages between the end of the stemand the head of a screw 10, threaded into a recess in the end of thestem. The disk may thus be rotated in the hub by means of the knob. Atumbler consisting of a portion 12 and a base or portion 13 is provided,the portion 12 of the tumbler having one of its edges received in theannular space between the outer edge of the disk and the edge of theopening, and having its other edge secured to the edge of the portion 13of the tumbler. The said portion 13 encircles the hub and the tumbler isrotatable on the hub.

Screws 14 are provided for holding the portion 12 of the tumbler to theportion 13,

and a second tumbler 15 is seated on the innor face of the portion 13 ofthe first tumbler. The said tumbler 15 has an arc-shaped slot 16, and anannular series of openings 17, and a single opening 18, just outside theseries 17. A pin 19 extending inwardly from the portion 13 engages theslot 16, to limit the angular movement of the tumbler 15, with respectto the portion 13.

The escutcheon 1 is provided with an arcshaped series 20 of indicatingcharacters, numerals in the present instance, the said series being asemi-circle. The portion 12 of the first tumbler has the edge betweenthe disk 11 and the escutcheon provided with a series of characters 21,also numerals. The outer edge of the disk is also provided with a series22 of characters, letters however instead of numerals.

A coil spring 24 encircles the stem 8 and the hub 6, between the disk 11and the tumbler 15. The spring acts to hold the disk and tumbler portion13 in spaced relation, and the knob 7 may be depressed to approach theportion 13. The disk 11 is pro vided with a pair of lateral inwardlyextending pins 25 and 25 each having its in ner end reduced, as shown inFig. 3. The pin 25 is of greater length and nearer the center than thepin 25 The pin 25 is adapted to engage one of the openings 17 of tumbler15, and the pin 25 the opening 18 of the said tumbler.

The bolt of the lock is in the form of a yoke or fork, comprising a body27, and arms 28 and 28 The arms 28 and 28 embrace the hub 6, and thebody 27 is provided with a reduced extension 29, passing through anopening or slot 30 in the casing 3. The shoulders formed by reducing theextension limit the outward movement of the bolt. Theportion 13 of thetumbler has openings 31 and 31 the former registering with an opening ofseries 17 and the latter with opening 18 of tumbler 15. The pin 25 willpass through an opening of series 17 when the knob is depressed, and theopening 31 of portion 13, and will engage the opening 32 of the arm 28of the bolt. The pin 25 will engage and pass through opening 18 oftumbler 15, and opening 31 of the base 13, and will not touch the arm 28of the bolt. A spring 33 is connected at one end to casing 3, as shownat 34, and the other end of the spring engages the arm 28 of the bolt,and the said spring acts normally to hold the bolt which is ofapproximately the same height as the knob when the knob is in normalposi tion. The rib thus acts as a shield to protect the knob and theindicating characters of the disk from injury.

The operation of the lock is as follows: For instance, to unlock withthe combination A, 16 and 5, the disk is depressed until the pin 25engages one of the openings 17 of the tumbler 15. Since the pin 25 is ofgreater length than the pin 25*, the said pin 25 will engage the tumbler15 before the pin 25 engages any portion of the locking mechanism. Theknob 7 is then turned to the right, and the tumbler 15 is turned in thesame direction, until the pin 19 engages the end of the slot 16. As soonas this engagement between the pin 19 and the end of the slot 16 takesplace, the tumbler 15 and the tumbler 12 turn together. The turning ofthe disk 7 to the right is continuous, the said disk carrying in itsmovement the tumblers 15 and 12 until the numeral 16 of the series 21 isin register or in radial alinement, with the numeral 5 of the series 20.The disk 7 is now turned to the left one point, that is, the distancebetween two numerals of the series 20. This movement of the disk to theleft moves tumbler 15 in the same direction but does not move tumbler12, since the pin 19 may move the length of the slot 16 of the tumbler15, before the tumbler 15 would partake of the movement of the disk tothe left. The above mentioned moving of the disk to the left, moves thetumbler 15 to the left just far'enough to bring the pin 19 toapproximately the center of the slot 16. The tumbler 15 is now in suchposition that the opening 18,0f the said tumbler is directly above theopening 31 of the tumbler 13. That opening of series 17 which isdiametrically opposite the opening 18 is also directly over the opening31. The registering openings 1831" and 1731 are now in position toreceive the pins 25 and 25 and after the knob 7 has been turned back thesingle point above mentioned, it is released, and the spring 2t movesthe disk outward or away from the tumblers to its normal position. Inthis position, that is, in normal position, the disk does not engage anyof the locking mechanism and may be turned freely in either directionwithout interfering with the said locking mechanism, that is, thetumblers 12 and 15 Nhile in normal position, the said knob 7 is turnedin either direction to bring the numeral A in radial alinement with thenumerals 16 and 5, thus bringing the pin 25directly over the registeringopenings 18 and 31 The disk is now depressed to cause the pin 25 to passthrough the openings 18 and 31 and into the opening 32 or 4:6 as thecase may be, of the bolt 27 or 37. The pin 25 passes through the opening31 and that opening of series 17 which is in register therewith. Thefree end of the pin 25 bears against the upper face of the belt at apoint diametrically opposite the engagement of the pin 25 with theopening 32 or 46, and acts to balance the bolt to prevent rockingthereof, while the knob 7 is turned to retract or withdraw the bolt.

In Fig. 10 is shown a modified form of bolt, adapted for chests, and forother forms of receptacles, wherein the lock and keeper move directlyaway from each other instead of laterally. The said bolt 37 is providedwith a catch 38 at its outer end, and extends through a slot 39 in thecasing 40. The slot is of greater length than the width of the bolt, sothat the bolt may swing laterally. A spring a1 holds the bolt to one endof the slot, and the outer end of the bolt is beveled at 42, so thatwhen engaged with a keeper, the bolt will be moved laterally against theresistance of the spring. The bolt is provided with a bearing 43,encircling the hub 6, corresponding to hub 6, and is held in a bearing4:4: riveted to the casing at 45. The keeper is not shown, since itforms no part of the invention and may be of any usual or desired.construction. The bolt extends beyond the bearing 44 at the inner end,and is provided with an opening 46, for receiving the pin 25 of thedisk, to operate the bolt. The casing is also provided with the lugs 47,corresponding to lugs or pins 35, for holding the tumblers in spacedrelation. In operation, the disk is operated in precisely the samemanner, and the pin 25 engages the opening 46 and swings the outer endof the bolt laterally, to release the catch, instead of moving the boltlongitudinally, as in the first mentioned embodiment.

I claim:

1. A lock of the character specified, comprising an escutcheon having acentral opening, a cup shaped casing secured to the escutcheon at theopening and provided with a central internal hub, a tumbler in theeasing, said tumbler comprising a ring having one edge flush with theedge of the opening and a base secured to the ring and rotatable on thehub, a disk fitting within the tumbler and having a stem journaled inthe hub and having a central knob extending in the opposite directionfrom the stern, a rotatable connection between the stem and the hub, asecond tumbler journaled on the hub between the disk and the base of thefirst tumbler, said second tumbler having an annular series of openingsand a single opening outside the series, the first tumbler havingoppositely arranged openings in its base for registering with an openingof the series and with the single opening, the disk having laterallyextending pins for engaging the openings, one of the pins being nearerthe center of the disk for engaging an opening of the series and ofgreater length for extending through both tumblers, a bolt slidable inthe casing between the casing and the adjacent tumbler and having anopening for engagement by the last named pin, a spring for holding thebolt in adjusted position, the escutcheon having an arc shaped series ofindicating characters adjacent to the opening, the first tumbler and thedisk each having an annular series of characters for registering witheach other and with the characters of the escutcheon, a spring pressingthe tumblers and the disk away from each other, and means for limitingthe movement of the last tumbler with respect to the first tumbler.

2. A lock of the character specified, comprising a casing having acircular opening, a disk in the opening, an annular or ring shapedtumbler encircling the disk within the opening, a disk shaped tumblerwithin the first tumbler, means for limiting the angular movement of thetumblers with respect to each other, said second tumbler having anannular series of openings and an opening outside of the series, pinsextending inwardly from the disk for engaging an opening of the seriesand the single opening, one of the pins being of greater length than theother pin, the first tumbler having means for engagement by the lastnamed pin when the disk is in a predetermined position with respect tothe casing, the disk being movable laterally toward the bolt, a springpressing the disk away from the bolt, and a spring for holding the boltin adjusted position, said disk having a knob for rotating the disk,said disk and first tumbler having means for indicating their positionwith respect to the casing.

3. A look of the character specified, comprising a casing having acircular opening and an escutcheon encircling the opening, a disk in theopening, an annular or ring shaped tumbler encircling the disk withinthe opening, a disk shaped tumbler within the first tumbler, means forlimiting the angular movement of the tumblers with re spect to eachother, said second tumbler having an annular series of openings and anopening outside of the series, pins extending inwardly from the disk forengaging an opening of the series and the single opening, one of thepins being of greater length than the other pin, the first tumblerhaving means for engagement by the last named pin when the disk is in apredetermined position with respect to the casing,

the disk being movable laterally toward the bolt, a spring pressing thedisk away from the bolt, the disk, first tumbler and escutcheon havingmeans for indicating their relative position.

at. A lock of the character specified, comprising a casing having acircular opening in one side, a disk rotatable in the opening, anannular or ring shaped tumbler encirclin the disk and mounted forrotation, a

bolt in the casing on the inner side of the disk, a disk shaped tumblermounted to ro tate in the casing between the bolt and the disk, saiddisk being movable laterally toward the bolt, and having means forengaging the second tumbler, the first tumbler and the bolt, when thedisk and tumblers occupy a predetermined position with respect to thecasing and to each other, a spring between the bolt and the disk andpressing them away from each other, means for limiting the angularmovement of the tumblers with respect to each other, and means on thefirst tumbler the disk and the casing for indicating their relativeposition, said disk having a knob for turning the same.

5. A lock of the character specified, comprising a casing having acircular opening in one side, a disk rotatable in the opening, anannular or ring shaped tumbler encircling the disk, and mounted forrotation, a bolt in the casing 011 the inner side of the disk, a diskshaped tumbler mounted to rotate in the casing between the bolt and thedisk, said disk being movable laterally toward the bolt, and havingmeans for engaging the second tumbler, the first tumbler and the bolt,when the disk and the tumblers occupy a predetermined position withrespect to the casing and to each other, a spring between 1 the bolt andthe disk and pressing them away from each other, and means on the firsttumbler the disk and the casing for indicating their relative position,said disk having a knob for turning the same.

6. A lock of the character specified, comprising a casing having acircular opening in one side, a disk rotatable in the opening, anannular or ring shaped tumbler encircling the disk, and mounted forrotation, a bolt in the casing on the inner side of the disk, a diskshaped tumbler mounted to rotate in the casing between the bolt and thedisk, said disk being movable laterally toward the bolt, and havingmeans for engaging the second tumbler, the first tumbler and the bolt,when the disk and tumblers occupy a predetermined position with respectto the casing and to each other, and means on the first tumbler the diskand the casing for indicating their relative position, said disk havinga knob for turning the same.

7. A look of the character specified, comprising a casing having acircular opening in one side, a disk rotatable in the opening,

an annular or ring shaped tumbler encircling the disk, and mounted forrotation, a bolt in the casing on the inner side of the disk, a diskshaped tumbler mounted to r0- tate in the casing between the bolt andthe disk, said disk being movable laterally to- Ward the bolt, andhaving means for engaging the second tumbler, the first tumbler and thebolt, When the disk and tumblers occupy a predetermined position withrespect to the casing and to each other, a spring between the bolt andthe disk and pressing them away from each other, and means on the firsttumbler, the disk and the casing for inclicating their relativeposition.

8. A lock of the character specified, comprising a casing having acircular opening in one side, a disk rotatable in the opening, anannular or ring shaped tumbler encircling the disk, and mounted iforrotation, a bolt in the casing on the inner side of the disk, a diskshaped tumbler mounted to rotate in the casing between the bolt and thedisk, said disk being movable laterally toward the bolt, and havingmeans for engaging the second tumbler, the first tumbler and the bolt,when the disk and tumblers occupy a predetermined )osition with respectto the casing and to eac other, and means on the first tumbler the diskand the casing for indicating their relative position.

HANSFORD C. STEVENS. Witnesses:

J. LEE STONER, L. H. Doomr'rnn.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

